Lenovo 4304493 - Manual (Page 17)

Use the following steps to connect and install the software for the
CD-ROM drive. Refer to the illustrations of the top and bottom of the
drive (page 2-2) to identify the external connectors and controls.
Step 1. Connecting the Power Source
Select a power source to operate the CD-ROM drive:
AC adapter connected to a power outlet
Ni-Cd battery pack
Six AA alkaline batteries
This step also includes Ni-Cd battery pack recharging instructions.
Connecting the AC Adapter
To use the AC Adapter, do the following:
1 Make sure that the power switch of the CD-ROM drive is off.
Power Switch
Off
On
Attention
Do not use an AC Adapter other than the one provided. If
you do, you might damage the CD-ROM drive.
2-6 20X Max Portable CD-ROM Drive